I was just wondering cause I'm wanting to get back into my favorite racing game and I'd like to meet the community.

Yes there is and here’s the link: https://discord.gg/zhzfxZg

FYI in the new speedrun.com layout discord links are a tiny icon underneath the "follow" button, on the right side of the panel that has the game's title

not to mention there's also a sticky thread called "NEW MKDD DISCORD" here on this forum :)